Prospective clinical and radiostereometric analysis of the Fitmore short-stem total hip arthroplasty

被引:31
作者
Acklin, Yves P. [1 ]
Jenni, Raphael [1 ]
Bereiter, Heinz [1 ]
Thalmann, Caroline [1 ]
Stoffel, Karl [2 ]
机构
[1] Kantonsspital Graubunden, Orthoped Surg, Loestr 99, CH-7000 Chur, Switzerland
[2] Kantonsspital Baselland, Orthoped Surg, Rheinstr 26, Liestal, Switzerland
关键词
RSA; Fitmore; Stem migration; Short stem; PRIMARY STABILITY; FEMORAL PROSTHESIS; MIGRATION PATTERN; EBRA-FCA; IMPLANTS; RSA; REPLACEMENT; MICROMOTION; SURVIVAL; REVISION;
D O I
10.1007/s00402-015-2401-9
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Uncemented short, curved femoral stems may help save proximal bone stock during total hip arthroplasty (THA) and facilitate insertion in minimal invasive surgery. The aim of this 2 year, prospective, single-center study was to examine the stability and migration of the Fitmore (A (R)) stem in THA using model-based radiostereometric analysis (RSA), and thus predict the implant's long-term survival. In addition, we evaluated the stem's clinical performance using standard clinical measures. We conducted a prospective cohort study of 34 THA patients who received the short Fitmore Hip Stem (Zimmer, Winterthur, Switzerland). At 3, 6, 12 and 24 months postoperatively, the patients underwent clinical evaluation and radiostereometric analysis (RSA) to measure stem migration. RSA analysis revealed a mean subsidence of -0.39 mm (95 % CI -0.60 to -0.18) at 3 months with no further migration after 2 years. Mean internal rotation along the longitudinal axis was 1.09A degrees (95 % CI 0.52-1.66) at 2 years, versus 0.85A degrees (95 % CI 0.44-1.26) at 3 months. The Harris hip score improved from 60 (range 30-80) preoperatively to 99 (range 83-100) after 2 years. Three patients underwent revision due to deep infection, non-specific thigh pain and aseptic loosening in one case. We conclude that the Fitmore Hip Stem stabilizes after 3 months and achieves good short-term clinical results in most cases.
引用
收藏
页码:277 / 284
页数:8
相关论文
共 34 条
[1]   Low BMD affects initial stability and delays stem osseointegration in cementless total hip arthroplasty in women A 2-year RSA study of 39 patients [J].
Aro, Hannu T. ;
Alm, Jessica J. ;
Moritz, Niko ;
Makinen, Tatu J. ;
Lankinen, Petteri .
ACTA ORTHOPAEDICA, 2012, 83 (02) :107-114
[2]   TRANSGLUTEAL APPROACH TO THE HIP-JOINT [J].
BAUER, R ;
KERSCHBAUMER, F ;
POISEL, S ;
OBERTHALER, W .
ARCHIVES OF ORTHOPAEDIC AND TRAUMA SURGERY, 1979, 95 (1-2) :47-49
[3]   Primary stability and strain distribution of cementless hip stems as a function of implant design [J].
Bieger, Ralf ;
Ignatius, Anita ;
Decking, Ralf ;
Claes, Lutz ;
Reichel, Heiko ;
Duerselen, Lutz .
CLINICAL BIOMECHANICS, 2012, 27 (02) :158-164
[4]   A prospective randomized study comparing electrochemically deposited hydroxyapatite and plasma-sprayed hydroxyapatite on titanium stems [J].
Boe, Berte Grimsmo ;
Rohrl, Stephan M. ;
Heier, Tore ;
Snorrason, Finnur ;
Nordsletten, Lars .
ACTA ORTHOPAEDICA, 2011, 82 (01) :13-19
[5]   Questionnaire on the perceptions of patients about total knee replacement [J].
Dawson, J ;
Fitzpatrick, R ;
Murray, D ;
Carr, A .
JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, 1998, 80B (01) :63-69
[6]   The predictive value of radiostereometric analysis for stem survival in total hip arthroplasty. A systematic review [J].
de Vries, Lieke M. A. ;
van der Weegen, Walter ;
Pilot, Peter ;
Stolarczyk, Piotr A. ;
Sijbesma, Thea ;
Hoffman, Erik L. .
HIP INTERNATIONAL, 2014, 24 (03) :215-222
[7]  
ENGH CA, 1992, CLIN ORTHOP RELAT R, P13
[8]   Short-stem hip arthroplasty in osteonecrosis of the femoral head [J].
Floerkemeier, Thilo ;
Budde, Stefan ;
Gronewold, Jens ;
Radtke, Kerstin ;
Ettinger, Max ;
Windhagen, Henning ;
von Lewinski, Gabriela .
ARCHIVES OF ORTHOPAEDIC AND TRAUMA SURGERY, 2015, 135 (05) :715-722
[9]  
Freitag T, 2015, ARCH ORTHOP TRAUMA S
[10]   Migration pattern of a femoral short-stem prosthesis: a 2-year EBRA-FCA-study [J].
Freitag, Tobias ;
Kappe, Thomas ;
Fuchs, Michael ;
Jung, Sebastian ;
Reichel, Heiko ;
Bieger, Ralf .
ARCHIVES OF ORTHOPAEDIC AND TRAUMA SURGERY, 2014, 134 (07) :1003-1008